highpocket74
Well-Known Member
Vendor
Lifetime Member
Also from the Donaldson website:
Air Filter Efficiency - What Is It and How Is It Measured? | Donaldson Engine & Vehicle
Donaldson air filters in Donaldson air cleaner housings have a 99.95+% minimum overall efficiency. The efficiency of the filter actually improves as dust loads up on the surface of the filter, so an air filter gets better as it gets used.
